US20190223603A1 - Ergonomic chair - Google Patents
Ergonomic chair Download PDFInfo
- Publication number
- US20190223603A1 US20190223603A1 US16/243,097 US201916243097A US2019223603A1 US 20190223603 A1 US20190223603 A1 US 20190223603A1 US 201916243097 A US201916243097 A US 201916243097A US 2019223603 A1 US2019223603 A1 US 2019223603A1
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- US
- United States
- Prior art keywords
- backrest
- seat
- ergonomic chair
- lock
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000006260 foam Substances 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 208000008035 Back Pain Diseases 0.000 description 5
- 210000001624 hip Anatomy 0.000 description 4
- 210000003127 knee Anatomy 0.000 description 4
- 210000002414 leg Anatomy 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 210000004197 pelvis Anatomy 0.000 description 2
- NLOALSPYZIIXEO-UHFFFAOYSA-N 2-benzoyloxyethyl-[1-[3-(trifluoromethyl)phenyl]propan-2-yl]azanium;chloride Chemical compound Cl.C=1C=CC=CC=1C(=O)OCCNC(C)CC1=CC=CC(C(F)(F)F)=C1 NLOALSPYZIIXEO-UHFFFAOYSA-N 0.000 description 1
- 201000003741 Gastrointestinal carcinoma Diseases 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 206010028836 Neck pain Diseases 0.000 description 1
- 208000002193 Pain Diseases 0.000 description 1
- 230000003187 abdominal effect Effects 0.000 description 1
- 208000019804 backache Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 201000002313 intestinal cancer Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/48—Support for the head or the back for the back of freely-rotatable type
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/002—Chair or stool bases
- A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/002—Chair or stool bases
- A47C7/006—Chair or stool bases with castors
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/02—Seat parts
- A47C7/029—Seat parts of non-adjustable shape adapted to a user contour or ergonomic seating positions
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/02—Seat parts
- A47C7/18—Seat parts having foamed material included in cushioning part
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/54—Supports for the arms
Definitions
- This invention relates to chairs, and more particularly to an ergonomic chair.
- the most aesthetically pleasing chair that allows the pelvis to tilt and elevated with respect to the knees is the HAG Capisco chair, as shown in FIG. 1 , but this significantly loses in the function stakes as an ergonomic chair.
- the classic “ergonomic” office chairs, as shown in FIG. 2 of which there are thousands, achieve very little unless the person's knees are below the hips and pelvis is tilted forward.
- the Balans chair with fixed knee bar, as shown in FIG. 3 puts undue pressure on the knees is very restricting and potentially dangerous on lower discs. It's also unappealing. The large ball is cumbersome and unappealing.
- an ergonomic chair comprising: a support structure, a seat assembly comprising a seat and a seat mount arranged on the support structure, and a backrest rotatably connected to the support structure through a backrest support, wherein the backrest is configured to be rotatable and fixed relative to the seat assembly.
- the ergonomic chair further comprising:
- a rotating mechanism comprising:
- a lock mechanism comprising:
- the lock mechanism comprises two cutouts diametrically opposite to each other such that the backrest is rotatable to either a backward position where the backrest is located behind the user or a forward position where the backrest is located in front of the user.
- the elastic component is a spring.
- the rotating sleeve and the backrest support form a unitary body.
- the rotating sleeve is removably connected to the backrest.
- the support structure further comprises a height adjusting mechanism comprising:
- a height adjusting handle connected to one end of the height adjusting lever
- angle plate is configured for pressing down a piston rod of the pneumatic rod when the height adjusting handle is lifted by a user.
- the support structure further comprises a plurality of legs each being mounted with a swivel caster.
- the seat mount is made of metal.
- the backrest further comprises a main portion, a first armrest portion and a second armrest portion extending from the main portion laterally in opposite directions.
- the main portion further comprises a top section, a middle section and a bottom section, and
- the backrest further comprises a first arc-shaped section formed between the top section and the first armrest portion, a second arc-shaped section formed between the top section and the second armrest portion, a third arc-shaped section formed between the bottom section and the first armrest portion, and a fourth arc-shaped section formed between the bottom section and the second armrest portion.
- the top section and the bottom section both taper to the middle section by their width.
- the backrest further comprises a backrest frame and a backrest cover attached onto the backrest frame.
- the backrest is made of plastic.
- the backrest cover is made of foam and fabric.
- the backrest frame is hollow with a opening through which the backrest support is inserted into the hollow backrest frame for attachment thereto.
- the seat further comprises a seat base arranged on the seat mount, a seat frame attached onto the seat base, and a seat cushion attached onto the seat frame.
- the seat base and the seat frame are made of plastic.
- the seat cushion is made of foam and fabric.
- the seat comprises a rear portion which is shaped to accommodate a user's hip and a raised front portion.
- an ergonomic chair comprising:
- a seat assembly comprising
- a backrest rotatably connected to the support structure through a backrest support
- a rotating mechanism comprising:
- a lock mechanism comprising:
- the support structure further comprises a height adjusting mechanism comprising:
- a height adjusting handle connected to one end of the height adjusting lever
- angle plate is configured for pressing down a piston rod of the pneumatic rod when the height adjusting handle is lifted by a user.
- the support structure further comprises a plurality of legs each being mounted with a swivel caster.
- the seat mount is made of metal.
- the backrest further comprises a main portion, a first armrest portion and a second armrest portion extending from the main portion laterally in opposite directions.
- the main portion further comprises a top section, a middle section and a bottom section, and
- the backrest further comprises a first arc-shaped section formed between the top section and the first armrest portion, a second arc-shaped section formed between the top section and the second armrest portion, a third arc-shaped section formed between the bottom section and the first armrest portion, and a fourth arc-shaped section formed between the bottom section and the second armrest portion.
- the top section and the bottom section both taper to the middle section by their width.
- the backrest further comprises a backrest frame and a backrest cover attached onto the backrest frame.
- the backrest is made of plastic.
- the backrest cover is made of foam and fabric.
- the backrest frame is hollow with a opening through which the backrest support is inserted into the hollow backrest frame for attachment thereto.
- the seat further comprises a seat base arranged on the seat mount, a seat frame attached onto the seat base, and a seat cushion attached onto the seat frame.
- the seat base and the seat frame are made of plastic.
- the seat cushion is made of foam and fabric.
- the seat comprises a rear portion which is shaped to accommodate a user's hip and a raised front portion.
- the backrest can be interchanged from the backward and forward positions or removed altogether.
- the backrest With the backrest in the rotated position it is ideal to work off a laptop, tablet or smart phone. With a small amount of weight on the feet the chair is extremely mobile—ideal for the modern workplace.
- the rotating backrest With the rotating backrest it is ideally suited to sitting at the desk in the office or home office.
- FIG. 1 is a perspective view of a prior art chair.
- FIG. 2 is a perspective view of a prior art chair.
- FIG. 3 is a perspective view of a prior art chair.
- FIG. 4 is a perspective view of the ergonomic chair in accordance with an embodiment of the present invention.
- FIG. 5 is a perspective view of the ergonomic chair in accordance with an embodiment of the present invention.
- FIG. 6 is a perspective view of the ergonomic chair in accordance with an embodiment of the present invention.
- FIG. 7 is a perspective view of the ergonomic chair in accordance with an embodiment of the present invention.
- FIG. 8 is a perspective view of the ergonomic chair with a person sitting thereon in accordance with an embodiment of the present invention.
- FIG. 9 is a close-up view of the backrest frame showing that the backrest frame attached to the backrest support in accordance with an embodiment of the present invention.
- FIG. 10 shows nuts used to attach the seat frame and the seat base together in accordance with an embodiment of the present invention.
- FIG. 11 shows the details of the seat assembly in accordance with an embodiment of the present invention.
- FIG. 12 shows copper nuts molded onto the seat base for fastening onto the seat mount in accordance with an embodiment of the present invention.
- FIG. 13 shows the rotating mechanism in exploded form in accordance with an embodiment of the present invention.
- FIG. 14 shows the rotating mechanism in assembled form in accordance with an embodiment of the present invention.
- FIG. 15 shows a height adjusting mechanism with use of a lever in accordance with an embodiment of the present invention.
- FIG. 16 shows the height adjustment mechanism cut away to show additional detail in accordance with an embodiment of the present invention.
- FIG. 17 shows the top view of the lock mechanism in an unlocking state in accordance with an embodiment of the present invention.
- FIG. 18 shows the top view of the lock mechanism in a locking state in accordance with an embodiment of the present invention.
- FIG. 19 shows a locking mechanism pre-set for two positions in accordance with an embodiment of the present invention.
- FIG. 20 shows an unlocking state of the lock mechanism in an assembled structure in accordance with an embodiment of the present invention.
- FIG. 21 there is shown in the preferred embodiment a locking mechanism pre-set for two positions in accordance with an embodiment of the present invention.
- FIG. 22 shows an unlocking state of the lock mechanism in an assembled structure in accordance with an embodiment of the present invention.
- FIG. 4 , FIG. 5 , FIG. 6 , and FIG. 7 are perspective view of the ergonomic chair in accordance with the preferred, illustrated embodiment of the present invention from a variety of angles.
- the ergonomic chair comprises a support structure 100 , a seat assembly 200 comprising a seat 210 and a seat mount 220 arranged on the support structure 100 , and a backrest 300 rotatably connected to the support structure 100 through a backrest support 310 .
- the backrest 300 further comprises a main portion 320 , a first armrest portion 330 and a second armrest portion 340 extending from the main portion 320 laterally in opposite directions.
- the first armrest portion 330 and the second armrest portion 340 on one hand are shaped to form cooperatively with the main portion 320 a backrest 300 for a user's back to rest thereon when the backrest 300 is in a backward position, and on the other hand to serve as an armrest for a user's arm to rest thereon when the backrest 300 is changed from the backward position to a forward position.
- the main portion 320 further comprises a top section 321 , a middle section 322 and a bottom section 323 .
- the first armrest portion 330 and the second armrest portion 340 extend from the middle section 322 laterally in opposite direction.
- the backrest 300 further comprises a first arc-shaped section 324 formed between the top section 321 and the first armrest portion 330 , a second arc-shaped section 325 formed between the top section 321 and the second armrest portion 340 , a third arc-shaped section 326 formed between the bottom section 323 and the first armrest portion 330 , and a fourth arc-shaped section 327 formed between the bottom section 323 and the second armrest portion 340 .
- the first arc-shaped section 324 and the second arc-shaped section 325 are shaped such that they can accommodate the user' arms comfortably.
- the top section 321 and the bottom section 322 both taper to the middle section 322 by their width.
- the seat 210 further comprises a rear portion 211 which is shaped to accommodate a user's hip and a raised front portion 212 , see particularly FIG. 8 which is a perspective view of the ergonomic chair with a person sitting thereon in accordance with the present invention.
- the backrest 300 comprises a backrest frame 350 and a backrest cover 360 (see particularly FIG. 9 ) attached onto the backrest frame 350 .
- the backrest frame 350 is preferably hollow with an opening 351 through which the backrest support 310 is inserted into the hollow backrest frame 350 for attachment thereto.
- FIG. 9 which is a close-up view of the backrest frame 350 showing that the backrest frame 350 attached to the backrest support 310 .
- the backrest frame 350 is threaded to the backrest support 310 .
- any know, appropriate connection for the backrest frame to the backrest support may be used without departing from the scope of the present invention.
- the backrest frame is made of plastic and the backrest cover is made of foam and fabric.
- the backrest frame and the backrest cover may be made of foam and fabric.
- any known, appropriate material may be used for the backrest frame and the backrest cover without departing from the scope of the present invention.
- the seat 210 further comprises a seat base 213 arranged on the seat mount 220 , a seat frame 214 attached onto the seat base 213 , and a seat cushion 215 attached onto the seat frame 214 .
- the seat base 213 and the seat frame 214 are made of plastic
- the seat cushion 215 is made of foam and fabric.
- the foam application process causes the foam to adhere to the top surface of the plastic.
- the seat mount 220 is made of metal.
- any known, appropriate material may be used for the seat base, the seat frame, seat cushion and the seat mount without departing from the scope of the present invention.
- copper nuts 216 may be permanently fastened to the plastic seat frame 214 using plastic injection insert-molding.
- the nuts 216 can be used to attach the seat frame 214 and the seat base 213 together, as shown in FIG. 10 .
- the backrest 300 is configured to be rotatable and fixed relative to the seat assembly 200 . This is done by further comprising a rotating mechanism 400 and a lock mechanism 500 .
- the rotating mechanism is illustrated in an exploded form in FIG. 13 , and in assembled form in FIG. 14 .
- the rotating mechanism 400 may comprise a rotating sleeve 410 connected to the backrest support 310 , and a bearing module 420 arranged within the rotating sleeve 410 .
- the bearing module 420 is sleeved onto a pneumatic rod 610 , which will be described below, so as to be capable of rotating together with the rotating sleeve 410 about the pneumatic rod 610 , thereby achieving rotation of the backrest 300 .
- the lock mechanism 500 may comprise a lock handle 510 , a lock lever 520 with one end pivotally connected to the seat mount 220 and the other end connected to the lock handle 510 , an spring 530 connected between the lock lever 520 and the seat mount 220 , a lock member 540 extending towards the rotating sleeve 410 from the lock lever 520 , at least one cutout 550 arranged along the perimeter of the rotating sleeve 410 (see FIG.
- each cutout 550 being sized to receive the lock member 540 , and a slot hole 560 opened into the seat mount 220 through which the lock member 540 is movable to shift between a locking state in which the lock member 540 is forced by the spring 530 to move into one the at least one cutout 550 and an unlocking state in which the lock member 540 is forced by a user against the spring 530 to move out of the at least one cutout 550 , thereby the backrest 300 is rotatable and fixed relative to the seat assembly 200 .
- the lock mechanism 500 may comprise two cutouts 550 diametrically opposite to each other, see particularly to FIG. 19 , such that the backrest 300 is rotatable to either a backward position where the backrest 300 is located behind a person or a forward position where the backrest 300 is located in front of the person.
- the rotating sleeve 410 and the backrest support 310 form a unitary body.
- the rotating sleeve 410 is removably connected to the backrest support 310 , in this case, the backrest 300 may be removed from the chair.
- FIG. 17 shows the top view of the lock mechanism in an unlocking state in which the lever 510 is pulled to one side to unlock the mechanism 500
- FIG. 18 shows the top view of the lock mechanism in a locking state in which no external force is applied to the lever 510 and the lever 520 is forced to the other side under a spring force to bring the lock member 540 into the cutout 550 to lock
- FIGS. 20 and 22 shows an unlocking state of the lock mechanism in an assembled structure, in which the lock member 540 is moved out of the cutout 550 .
- FIG. 21 and FIG. 19 there is shown in the preferred embodiment a lock mechanism pre-set for two positions.
- the spring component causes the locking mechanism to automatically lock into place employing a cutout at each position. More than two preset positions may be used.
- the ergonomic chair may further include a height adjusting mechanism 600 with use of a height adjusting lever 620 , as shown in FIG. 15 .
- FIG. 16 shows the height adjusting mechanism 600 cut away to show additional details.
- the height adjusting mechanism 600 may comprise a pneumatic rod 610 passing through a bottom opening 222 opened at a depression 221 formed within the seat mount 220 , a height adjusting lever 620 passing through side walls 223 of the depression 221 , a height adjusting handle 630 connected to one end of the height adjusting lever 620 , and an angle plate 640 fixed onto a section of the height adjusting lever 620 within the depression 221 .
- the angle plate 640 may be configured for pressing down a piston rod of the pneumatic rod 610 when the height adjusting handle 630 is lifted by a person.
- the support structure 100 further comprises a plurality of legs 100 , preferably five legs, each being mounted with a swivel caster 120 .
- the backrest can be interchanged from the backward and forward positions or removed altogether.
- the backrest With the backrest in the rotated position it is ideal to work off a laptop, tablet or smart phone. With a small amount of weight on the feet the chair is extremely mobile—ideal for the modern workplace.
- the rotating backrest With the rotating backrest it is ideally suited to sitting at the desk in the office or home office.
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Chairs Characterized By Structure (AREA)
Abstract
Description
- This application is based upon and claims priority to Hong Kong's Patent Application No. 18101217.5, filed on Jan. 25, 2018 the entire contents of which are incorporated herein by reference.
- This invention relates to chairs, and more particularly to an ergonomic chair.
- Many people suffer back and/or neck pain at some point during their lives. Poor posture and its contribution to spine related ailments is both well documented and well understood.
- A person suffering back pain is highly motivated to gain a permanent solution. Correlation between postural factors and back pain are well documented and well understood by sufferers.
- The problem with conventional chairs is they hold our body in an unnatural position that puts strain on the back. Over time this causes many back related problems including, back ache, head ache, pain referral and poor posture.
- Research is also showing it has significant other less obvious effects such as increased incidence in bowel cancer and other organic issues due to prolonged compression of abdominal contents while seated.
- Though back pain represents the biggest cause of absenteeism from work, seating posture in the work place has been poorly addressed. Ergonomic chairs currently occupy a very small portion of the work seat market. There are different options available but together they are still relatively uncommon particularly out in the workplace. Several “Saddle Chairs” are on the market, but they all significantly lack features in terms of comfort, function and aesthetics.
- The most aesthetically pleasing chair that allows the pelvis to tilt and elevated with respect to the knees is the HAG Capisco chair, as shown in
FIG. 1 , but this significantly loses in the function stakes as an ergonomic chair. The classic “ergonomic” office chairs, as shown inFIG. 2 , of which there are thousands, achieve very little unless the person's knees are below the hips and pelvis is tilted forward. The Balans chair with fixed knee bar, as shown inFIG. 3 , puts undue pressure on the knees is very restricting and potentially dangerous on lower discs. It's also unappealing. The large ball is cumbersome and unappealing. - Disclosed herein is an ergonomic chair, comprising: a support structure, a seat assembly comprising a seat and a seat mount arranged on the support structure, and a backrest rotatably connected to the support structure through a backrest support, wherein the backrest is configured to be rotatable and fixed relative to the seat assembly.
- In some embodiments, the ergonomic chair further comprising:
- a rotating mechanism comprising:
-
- a rotating sleeve connected to the backrest support, and
- a bearing module arranged within the rotating sleeve, and
- a lock mechanism comprising:
-
- a lock handle,
- a lock lever with one end pivotally connected to the seat mount and the other end connected to the lock handle,
- an elastic component connected between the lock lever and the seat mount,
- a lock member extending towards the rotating sleeve from the lock lever,
- at least one cutout arranged along the perimeter of the rotating sleeve, each cutout being sized to receive the lock member, and
- a slot hole opened into the seat mount through which the lock member is movable to shift between a locking state in which the lock member is forced by the elastic component to move into the at least one cutout and a unlocking state in which the lock member is forced by a user against the elastic component to move out of the at least one cutout, thereby the backrest is rotatable and fixed relative to the seat assembly.
- In some embodiments, the lock mechanism comprises two cutouts diametrically opposite to each other such that the backrest is rotatable to either a backward position where the backrest is located behind the user or a forward position where the backrest is located in front of the user.
- In some embodiments, the elastic component is a spring.
- In some embodiments, the rotating sleeve and the backrest support form a unitary body.
- In some embodiments, the rotating sleeve is removably connected to the backrest.
- In some embodiments, the support structure further comprises a height adjusting mechanism comprising:
- a pneumatic rod passing through a bottom opening opened at a depression formed within the seat mount,
- a height adjusting lever passing through side walls of the depression,
- a height adjusting handle connected to one end of the height adjusting lever, and
- an angle plate fixed onto a section of the height adjusting lever within the depression,
- wherein the angle plate is configured for pressing down a piston rod of the pneumatic rod when the height adjusting handle is lifted by a user.
- In some embodiments, the support structure further comprises a plurality of legs each being mounted with a swivel caster.
- In some embodiments, the seat mount is made of metal.
- In some embodiments, wherein the backrest further comprises a main portion, a first armrest portion and a second armrest portion extending from the main portion laterally in opposite directions.
- In some embodiments, the main portion further comprises a top section, a middle section and a bottom section, and
- the backrest further comprises a first arc-shaped section formed between the top section and the first armrest portion, a second arc-shaped section formed between the top section and the second armrest portion, a third arc-shaped section formed between the bottom section and the first armrest portion, and a fourth arc-shaped section formed between the bottom section and the second armrest portion.
- In some embodiments, the top section and the bottom section both taper to the middle section by their width.
- In some embodiments, the backrest further comprises a backrest frame and a backrest cover attached onto the backrest frame.
- In some embodiments, the backrest is made of plastic.
- In some embodiments, the backrest cover is made of foam and fabric.
- In some embodiments, the backrest frame is hollow with a opening through which the backrest support is inserted into the hollow backrest frame for attachment thereto.
- In some embodiments, the seat further comprises a seat base arranged on the seat mount, a seat frame attached onto the seat base, and a seat cushion attached onto the seat frame.
- In some embodiments, the seat base and the seat frame are made of plastic.
- In some embodiments, the seat cushion is made of foam and fabric.
- In some embodiments, the seat comprises a rear portion which is shaped to accommodate a user's hip and a raised front portion.
- Further disclosed herein is an ergonomic chair, comprising:
- a support structure,
- a seat assembly comprising
-
- a seat, and
- a seat mount arranged on the support structure, and
- a backrest rotatably connected to the support structure through a backrest support,
- a rotating mechanism comprising:
-
- a rotating sleeve connected to the backrest support, and
- a bearing module arranged within the rotating sleeve, and
- a lock mechanism comprising:
-
- a lock handle,
- a lock lever with one end pivotally connected to the seat mount and the other end connected to the lock handle,
- an elastic component connected between the lock lever and the seat mount,
- a lock member extending towards the rotating sleeve from the lock lever,
- at least one cutout arranged along the perimeter of the rotating sleeve, each cutout being sized to receive the lock member, and
- a slot hole opened into the seat mount through which the lock member is movable to shift between a locking state in which the lock member is forced by the elastic component to move into the at least one cutout and a unlocking state in which the lock member is forced by a user against the elastic component to move out of the at least one cutout, thereby the backrest is rotatable and fixed relative to the seat assembly.
- In some embodiments, the support structure further comprises a height adjusting mechanism comprising:
- a pneumatic rod passing through a bottom opening opened at a depression formed within the seat mount,
- a height adjusting lever passing through side walls of the depression,
- a height adjusting handle connected to one end of the height adjusting lever, and
- an angle plate fixed onto a section of the height adjusting lever within the depression,
- wherein the angle plate is configured for pressing down a piston rod of the pneumatic rod when the height adjusting handle is lifted by a user.
- In some embodiments, the support structure further comprises a plurality of legs each being mounted with a swivel caster.
- In some embodiments, the seat mount is made of metal.
- In some embodiments, the backrest further comprises a main portion, a first armrest portion and a second armrest portion extending from the main portion laterally in opposite directions.
- In some embodiments, the main portion further comprises a top section, a middle section and a bottom section, and
- the backrest further comprises a first arc-shaped section formed between the top section and the first armrest portion, a second arc-shaped section formed between the top section and the second armrest portion, a third arc-shaped section formed between the bottom section and the first armrest portion, and a fourth arc-shaped section formed between the bottom section and the second armrest portion.
- In some embodiments, the top section and the bottom section both taper to the middle section by their width.
- In some embodiments, the backrest further comprises a backrest frame and a backrest cover attached onto the backrest frame.
- In some embodiments, the backrest is made of plastic.
- In some embodiments, the backrest cover is made of foam and fabric.
- In some embodiments, the backrest frame is hollow with a opening through which the backrest support is inserted into the hollow backrest frame for attachment thereto.
- In some embodiments, the seat further comprises a seat base arranged on the seat mount, a seat frame attached onto the seat base, and a seat cushion attached onto the seat frame.
- In some embodiments, the seat base and the seat frame are made of plastic.
- In some embodiments, the seat cushion is made of foam and fabric.
- In some embodiments, the seat comprises a rear portion which is shaped to accommodate a user's hip and a raised front portion.
- According to the present invention, the backrest can be interchanged from the backward and forward positions or removed altogether. With the backrest in the rotated position it is ideal to work off a laptop, tablet or smart phone. With a small amount of weight on the feet the chair is extremely mobile—ideal for the modern workplace. With the rotating backrest it is ideally suited to sitting at the desk in the office or home office.
- The novel features believed to be characteristic of the invention are set forth in the appended claims and claims yet to be filed. However, the invention itself, as well as a preferred mode of use and further objectives and advantages thereof, will best be understood by reference to the following detailed description when read in conjunction with the accompanying Figures wherein:
-
FIG. 1 is a perspective view of a prior art chair. -
FIG. 2 is a perspective view of a prior art chair. -
FIG. 3 is a perspective view of a prior art chair. -
FIG. 4 is a perspective view of the ergonomic chair in accordance with an embodiment of the present invention. -
FIG. 5 is a perspective view of the ergonomic chair in accordance with an embodiment of the present invention. -
FIG. 6 is a perspective view of the ergonomic chair in accordance with an embodiment of the present invention. -
FIG. 7 is a perspective view of the ergonomic chair in accordance with an embodiment of the present invention. -
FIG. 8 is a perspective view of the ergonomic chair with a person sitting thereon in accordance with an embodiment of the present invention. -
FIG. 9 is a close-up view of the backrest frame showing that the backrest frame attached to the backrest support in accordance with an embodiment of the present invention. -
FIG. 10 shows nuts used to attach the seat frame and the seat base together in accordance with an embodiment of the present invention. -
FIG. 11 shows the details of the seat assembly in accordance with an embodiment of the present invention. -
FIG. 12 shows copper nuts molded onto the seat base for fastening onto the seat mount in accordance with an embodiment of the present invention. -
FIG. 13 shows the rotating mechanism in exploded form in accordance with an embodiment of the present invention. -
FIG. 14 shows the rotating mechanism in assembled form in accordance with an embodiment of the present invention. -
FIG. 15 shows a height adjusting mechanism with use of a lever in accordance with an embodiment of the present invention. -
FIG. 16 shows the height adjustment mechanism cut away to show additional detail in accordance with an embodiment of the present invention. -
FIG. 17 shows the top view of the lock mechanism in an unlocking state in accordance with an embodiment of the present invention. -
FIG. 18 shows the top view of the lock mechanism in a locking state in accordance with an embodiment of the present invention. -
FIG. 19 shows a locking mechanism pre-set for two positions in accordance with an embodiment of the present invention. -
FIG. 20 shows an unlocking state of the lock mechanism in an assembled structure in accordance with an embodiment of the present invention. -
FIG. 21 there is shown in the preferred embodiment a locking mechanism pre-set for two positions in accordance with an embodiment of the present invention. -
FIG. 22 shows an unlocking state of the lock mechanism in an assembled structure in accordance with an embodiment of the present invention. - Detailed description of the preferred embodiment is provided herein. It is to be understood, however, that the present invention may be embodied in various forms. Various aspects of the invention may be inverted, or changed in reference to specific part shape and detail, part location, or part composition. Therefore, specific details disclosed herein are not to be interpreted as limiting, but rather as a basis for the claims and as a representative basis for teaching one skilled in the art to employ the present invention in virtually any appropriately detailed system, structure or manner.
- Turning to the
FIG. 4 ,FIG. 5 ,FIG. 6 , andFIG. 7 , which are perspective view of the ergonomic chair in accordance with the preferred, illustrated embodiment of the present invention from a variety of angles. The ergonomic chair comprises asupport structure 100, aseat assembly 200 comprising aseat 210 and aseat mount 220 arranged on thesupport structure 100, and abackrest 300 rotatably connected to thesupport structure 100 through abackrest support 310. - In a preferred embodiment of the present invention, referring particularly to
FIG. 6 , thebackrest 300 further comprises amain portion 320, afirst armrest portion 330 and asecond armrest portion 340 extending from themain portion 320 laterally in opposite directions. Thefirst armrest portion 330 and thesecond armrest portion 340 on one hand are shaped to form cooperatively with the main portion 320 abackrest 300 for a user's back to rest thereon when thebackrest 300 is in a backward position, and on the other hand to serve as an armrest for a user's arm to rest thereon when thebackrest 300 is changed from the backward position to a forward position. - In a preferred embodiment of the present invention, referring again to
FIG. 6 , themain portion 320 further comprises atop section 321, amiddle section 322 and abottom section 323. In particularly, thefirst armrest portion 330 and thesecond armrest portion 340 extend from themiddle section 322 laterally in opposite direction. Thebackrest 300 further comprises a first arc-shapedsection 324 formed between thetop section 321 and thefirst armrest portion 330, a second arc-shapedsection 325 formed between thetop section 321 and thesecond armrest portion 340, a third arc-shapedsection 326 formed between thebottom section 323 and thefirst armrest portion 330, and a fourth arc-shapedsection 327 formed between thebottom section 323 and thesecond armrest portion 340. The first arc-shapedsection 324 and the second arc-shapedsection 325 are shaped such that they can accommodate the user' arms comfortably. Thetop section 321 and thebottom section 322 both taper to themiddle section 322 by their width. - In a preferred embodiment of the present invention, referring particularly to
FIG. 4 , theseat 210 further comprises arear portion 211 which is shaped to accommodate a user's hip and a raisedfront portion 212, see particularlyFIG. 8 which is a perspective view of the ergonomic chair with a person sitting thereon in accordance with the present invention. - In a preferred embodiment of the present invention, the
backrest 300 comprises abackrest frame 350 and a backrest cover 360 (see particularlyFIG. 9 ) attached onto thebackrest frame 350. Thebackrest frame 350 is preferably hollow with anopening 351 through which thebackrest support 310 is inserted into thehollow backrest frame 350 for attachment thereto. Now referring toFIG. 9 , which is a close-up view of thebackrest frame 350 showing that thebackrest frame 350 attached to thebackrest support 310. In this embodiment, thebackrest frame 350 is threaded to thebackrest support 310. However, any know, appropriate connection for the backrest frame to the backrest support may be used without departing from the scope of the present invention. - In a preferred embodiment of the present invention, the backrest frame is made of plastic and the backrest cover is made of foam and fabric. However, any known, appropriate material may be used for the backrest frame and the backrest cover without departing from the scope of the present invention.
- Now referring to
FIG. 11 , which shows the details of theseat assembly 200 according to an embodiment of the present invention. In this embodiment, theseat 210 further comprises aseat base 213 arranged on theseat mount 220, aseat frame 214 attached onto theseat base 213, and aseat cushion 215 attached onto theseat frame 214. In a preferred embodiment of the present invention, theseat base 213 and theseat frame 214 are made of plastic, theseat cushion 215 is made of foam and fabric. The foam application process causes the foam to adhere to the top surface of the plastic. Preferably, theseat mount 220 is made of metal. However, any known, appropriate material may be used for the seat base, the seat frame, seat cushion and the seat mount without departing from the scope of the present invention. - In a preferred embodiment of the present invention,
copper nuts 216 may be permanently fastened to theplastic seat frame 214 using plastic injection insert-molding. Thenuts 216 can be used to attach theseat frame 214 and theseat base 213 together, as shown inFIG. 10 . In the illustrated embodiment, there are fourcopper nuts 216 molded onto theseat base 213 for fastening onto theseat mount 220, as shown inFIG. 12 . - In a preferred embodiment of the present invention, the
backrest 300 is configured to be rotatable and fixed relative to theseat assembly 200. This is done by further comprising arotating mechanism 400 and alock mechanism 500. The rotating mechanism is illustrated in an exploded form inFIG. 13 , and in assembled form inFIG. 14 . In the illustrated embodiment, therotating mechanism 400 may comprise arotating sleeve 410 connected to thebackrest support 310, and abearing module 420 arranged within therotating sleeve 410. Thebearing module 420 is sleeved onto apneumatic rod 610, which will be described below, so as to be capable of rotating together with therotating sleeve 410 about thepneumatic rod 610, thereby achieving rotation of thebackrest 300. - Turning next to
FIG. 17 andFIG. 18 , the lock mechanism is illustrated in a top view. In the illustrated embodiment, thelock mechanism 500 may comprise alock handle 510, alock lever 520 with one end pivotally connected to theseat mount 220 and the other end connected to thelock handle 510, anspring 530 connected between thelock lever 520 and theseat mount 220, alock member 540 extending towards the rotatingsleeve 410 from thelock lever 520, at least onecutout 550 arranged along the perimeter of the rotating sleeve 410 (seeFIG. 19 ), eachcutout 550 being sized to receive thelock member 540, and aslot hole 560 opened into theseat mount 220 through which thelock member 540 is movable to shift between a locking state in which thelock member 540 is forced by thespring 530 to move into one the at least onecutout 550 and an unlocking state in which thelock member 540 is forced by a user against thespring 530 to move out of the at least onecutout 550, thereby thebackrest 300 is rotatable and fixed relative to theseat assembly 200. In a preferred embodiment of the present invention, thelock mechanism 500 may comprise twocutouts 550 diametrically opposite to each other, see particularly toFIG. 19 , such that thebackrest 300 is rotatable to either a backward position where thebackrest 300 is located behind a person or a forward position where thebackrest 300 is located in front of the person. - It should be noted that, although a spring is shown in the Figures, other elastic component that can achieve the object of the present invention is possible without departing from the scope of the present invention.
- In an embodiment, the
rotating sleeve 410 and thebackrest support 310 form a unitary body. In another embodiment, therotating sleeve 410 is removably connected to thebackrest support 310, in this case, thebackrest 300 may be removed from the chair. - In the illustrated form, a person would hold the backrest firmly and pull the lever to the side to unlock and rotate the seat section thereby rotating the backrest in relation to the seat.
FIG. 17 shows the top view of the lock mechanism in an unlocking state in which thelever 510 is pulled to one side to unlock themechanism 500, andFIG. 18 shows the top view of the lock mechanism in a locking state in which no external force is applied to thelever 510 and thelever 520 is forced to the other side under a spring force to bring thelock member 540 into thecutout 550 to lock.FIGS. 20 and 22 shows an unlocking state of the lock mechanism in an assembled structure, in which thelock member 540 is moved out of thecutout 550. - Turning next to
FIG. 21 andFIG. 19 , there is shown in the preferred embodiment a lock mechanism pre-set for two positions. The spring component causes the locking mechanism to automatically lock into place employing a cutout at each position. More than two preset positions may be used. - In a preferred embodiment of the present invention, the ergonomic chair may further include a
height adjusting mechanism 600 with use of aheight adjusting lever 620, as shown inFIG. 15 .FIG. 16 shows theheight adjusting mechanism 600 cut away to show additional details. In the illustrated embodiment, theheight adjusting mechanism 600 may comprise apneumatic rod 610 passing through a bottom opening 222 opened at adepression 221 formed within theseat mount 220, aheight adjusting lever 620 passing throughside walls 223 of thedepression 221, aheight adjusting handle 630 connected to one end of theheight adjusting lever 620, and anangle plate 640 fixed onto a section of theheight adjusting lever 620 within thedepression 221. Theangle plate 640 may be configured for pressing down a piston rod of thepneumatic rod 610 when theheight adjusting handle 630 is lifted by a person. - In the illustrated embodiment, referring back to
FIGS. 4-7 , thesupport structure 100 further comprises a plurality oflegs 100, preferably five legs, each being mounted with aswivel caster 120. - According to the present invention, the backrest can be interchanged from the backward and forward positions or removed altogether. With the backrest in the rotated position it is ideal to work off a laptop, tablet or smart phone. With a small amount of weight on the feet the chair is extremely mobile—ideal for the modern workplace. With the rotating backrest it is ideally suited to sitting at the desk in the office or home office.
- While the invention has been described in connection with a preferred embodiment, it is not intended to limit the scope of the invention to the particular form set forth, but on the contrary, it is intended to cover such alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as defined by the currently or later appended claims.
Claims (35)
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HK18101217 | 2018-01-25 | ||
HK18101217.5 | 2018-01-25 |
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US20190223603A1 true US20190223603A1 (en) | 2019-07-25 |
US10966531B2 US10966531B2 (en) | 2021-04-06 |
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US16/243,097 Active 2039-06-08 US10966531B2 (en) | 2018-01-25 | 2019-01-09 | Ergonomic chair |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US11253076B2 (en) * | 2019-02-05 | 2022-02-22 | Unchair LLC | Chair having open shoulder backrest |
USD953087S1 (en) * | 2020-05-20 | 2022-05-31 | Cramer Llc | Chair |
US11357330B2 (en) * | 2020-01-17 | 2022-06-14 | Bock 1 Gmbh & Co. Kg | Support for seating furniture and item of seating furniture |
US11564495B1 (en) | 2021-09-07 | 2023-01-31 | Nuchair Inc. | Adjustable and angled seat assembly |
WO2023202539A1 (en) * | 2022-04-17 | 2023-10-26 | Workhorse Limited | Ergonomic seat |
USD1032219S1 (en) * | 2023-04-11 | 2024-06-25 | Suzhou Weilin Furniture Co., Ltd. | Seat |
Families Citing this family (1)
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WO2019204714A1 (en) | 2018-04-19 | 2019-10-24 | Cramer Llc | Chair having pliable backrest and methods for same |
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US3905642A (en) * | 1974-12-23 | 1975-09-16 | Luther G Simjian | Chair with moving seat and mirror |
US4709963A (en) | 1986-12-12 | 1987-12-01 | Milsco Manufacturing Company | Adjustable office chair |
US5203853A (en) | 1991-09-18 | 1993-04-20 | Herman Miller, Inc. | Locking chair tilt mechanism with torsion bar |
DE9303222U1 (en) * | 1993-03-05 | 1993-05-19 | Bordewieck, Eckart, Dr.med.dent., 7312 Kirchheim | Chair for precision work while seated |
JPH10215978A (en) * | 1996-12-02 | 1998-08-18 | Takumi Nozue | Chair with rest instrument |
DE19823632C1 (en) | 1998-05-27 | 1999-09-30 | Roeder Peter | Office chair |
JP2002262953A (en) | 2001-03-13 | 2002-09-17 | Itoki Crebio Corp | Chair |
US9010867B2 (en) * | 2012-06-01 | 2015-04-21 | Steelcase Inc. | Stool with tilted orientation |
CN106942930A (en) | 2017-05-12 | 2017-07-14 | 江苏神工智能科技有限公司 | A kind of practical Ergonomic side chair |
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2019
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11253076B2 (en) * | 2019-02-05 | 2022-02-22 | Unchair LLC | Chair having open shoulder backrest |
US11357330B2 (en) * | 2020-01-17 | 2022-06-14 | Bock 1 Gmbh & Co. Kg | Support for seating furniture and item of seating furniture |
USD953087S1 (en) * | 2020-05-20 | 2022-05-31 | Cramer Llc | Chair |
US11564495B1 (en) | 2021-09-07 | 2023-01-31 | Nuchair Inc. | Adjustable and angled seat assembly |
WO2023202539A1 (en) * | 2022-04-17 | 2023-10-26 | Workhorse Limited | Ergonomic seat |
USD1032219S1 (en) * | 2023-04-11 | 2024-06-25 | Suzhou Weilin Furniture Co., Ltd. | Seat |
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